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Issue 8, 2011
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Self-assembly of a family of macrocyclic polyoxotungstates with emergent material properties

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Abstract

Using a time-dependent synthetic approach, the construction of a new class of macrocyclic tungstotellurite heteropolyacid cluster-squares, [W28Te8O112]24 (1a), [W28Te9O115]26 (2a) and [W28Te10O118]28 (3a) has been achieved. Isolation of these architectures is facilitated by the tellurite anions, which act as templates within structural building units and linkers between them, as well as pendant ligands which subsequently control inter-cluster aggregation, thereby defining a new architectural principle in the assembly of polyoxotungstate clusters. ESI-MS studies on these assemblies provide insights into the self-assembly process, distinguishing the different structural roles between the templating, linking and pendant tellurium-based anions. Further, cation exchange reactions on the crystalline forms of the macrocyclic POMs cause a morphological transformation resulting in the emergence of microtubular architectures with vast aspect ratios thereby opening the way to fabricate new material architectures capable of exploiting the properties of HPAs in applications such as ion exchange, catalysis and sensing.

Graphical abstract: Self-assembly of a family of macrocyclic polyoxotungstates with emergent material properties

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Publication details

The article was received on 12 Mar 2011, accepted on 05 May 2011 and first published on 31 May 2011


Article type: Edge Article
DOI: 10.1039/C1SC00150G
Citation: Chem. Sci., 2011,2, 1502-1508
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    Self-assembly of a family of macrocyclic polyoxotungstates with emergent material properties

    J. Gao, J. Yan, S. G. Mitchell, H. N. Miras, A. G. Boulay, D. Long and L. Cronin, Chem. Sci., 2011, 2, 1502
    DOI: 10.1039/C1SC00150G

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